PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/12-08:58:10
G10     265.2          37.9                6.2 +/-    1.42       9.3 +/-    1.42  0.040 / 0.040
G13     42.6           19.1                3.0 +/-    2.31       6.6 +/-    2.31  0.040 / 0.040
G15     60.4           49.3                6.2 +/-    1.21       7.9 +/-    1.21  0.190 / 0.430
G16     286.5          12.0                4.3 +/-    1.72      11.5 +/-    1.72  0.200 / 0.380
G20     294.7          59.6                4.3 +/-    0.75       4.9 +/-    0.75  0.180 / 0.290
G21     9.9            72.0                4.6 +/-    0.78       4.8 +/-    0.78  0.150 / 0.550
G24     120.2          13.4                5.7 +/-    2.06      14.8 +/-    2.06  0.080 / 0.070
G27     320.3          15.6                2.9 +/-    1.53       7.1 +/-    1.53  0.050 / 0.070
G29     164.7          28.3                7.8 +/-    1.74      14.1 +/-    1.74  0.030 / 0.050